Safety-gate for elevator-wells



(No Model.)

B. W. PEOKER.

SAFETY GATEIOR ELEVATOR WELLS.

N 268.529. Patented 1360.,5, 1882.

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'Everefi WBOI1 I To all whom it may concern UNITED STATES PATENT OFFIC EVERETT PEGKER, OF LYNN, ASSIGNOR OF ONE-HALF TO ARTHUR FULLER, OF BOSTON,MASSA(JHUSETTS.

SAFETY-GATE FOR ELEVATOR-WELLS.

SPECIFICATION forming Be it known that I,.EVERETT WEBSTER PECKER, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Safety-Gates for Elevator-Wells; andldoherebydeclarethe following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to means whereby-the safety-gate which closes the doorways of elevator-wells shall be automatically closed or returned to its normal position after the passage of the elevator-carin ascending or descending, the .said gate being raised-in the act of opening by the attendant of the car and returned to its closed position by its own gravity, a weight being connected with it to partially equipoise it and to. actuate the mechanism which holds it open, while to compel the gate to remain in its open elevated position when passengers are entering or leaving the car a spring-impelled bolt is employed, such bolt being contained within .a pocket in the casing of the well and operating with a spring-latch secured to the weight, being itself actuated by a wiper-cam secured to the car, as hereinafter explained...

The drawings accompanying this specification represent in Figure 1 a side elevation of an elevator car and gate containing my improvements. Fig. 2 is an elevation showing the gate held open. Fig. 3 is an enlarged view of the weight with the locking-bolt in its normal position, and Fig. 4 an elevation showing the bolt pressed in by the wiper-cam. Fig. 5 is a vertical cross-section through locking-bolt, and Fig. 6 a horizontal cross-section through the same. Fig. 7 is a side and end view of the weight, showing the spring-catch. In such drawings, A represents the well-door of an elevator for carrying passengers or freight; B, the car of such elevator; O, the gate for closing each doorway of the well, and 1) the hoisting-rope of the car. i

In carrying my invention into practice Ifirst part of Letters Patent No. 268,529, dated December 5, 1882.

Application filed May 19, 1882. (No model.)

provide each doorway of the well with a weight, E, of a specific gravity somewhat less than that of the gate 0, this weight sliding in a roadway or chamber, F, in the casing of the well, and being connected with the gate by a cord or chain, G, passingahout suitable sheaves, H 1, I

the first being pivoted within the top of the door frame or casing or adjacent part of the well and above the chamber F, while the latter is pivoted to the top of the elevator'well. The weight E is not intended to overbalance or equipoise, but is incidentally intended to prevent too sudden descent of such gate, and mainly to constitute part of the m chanism, whereby thegate is held in its raised or open position during the passage of the car past the doorway. To effect thislatter result I add to one side of such weight a yielding stop or abutment in the form of a spring-latch, J, which is secured at its lower end to the weight, and at top constitutes a ledge or shelf, which inter cepts a horizontal spring-impelled bolt, K,

which is contained within achamber or inclosure in the well-casing, and is so situated with respect to stop J as to protrude against the stressof its spring by the action of a double-inclined wiper-cam (to be hereinafter described) into the roadway F to such an extent as to intercept the said stop J after the latter has passed below it. The head I) of the bolt K projects into the wellP a shortdistance, in order, as the weight rises or falls, to intercept a stationary bearin g or cam-plate, L, secured to the side of the elevator-car B, as shown in Fig. 2 of the drawings, this plate L being formed at each end, upon its outer side, with inclined planes 0 0, to permit the head of the bolt to readily ride over it. plate Land bolt-head b are such that as the car rises or falls the bolt is crowded inward against the stress otits spring (1 by the wipercam L, and its nose rides .over and rests upon the top ofthe latch or stop J, thelatter, during the descent of the weight, being pushed inward by such bolt until such bolt passes above the latch, when such latch moves outward by its The relative positions of the inherent elasticity and constitutes a shelf to IOO anism is as follows: Presuming the elevatorcar to be below a given doorway in the well and ascending, the gate beingin its lowest position, closing such doorway, and the weight E, consequently in its highest position, removed from the bolt K. As the floor of the car arlives at or about at the door-sill the cam-plate L, carried. by the car, wipes against the head of the bolt K and crowds the latter inward. The car is stopped, and the attendant raises the gate to its highest'point', which permits of ingress or egress of passengers, and when this has been efiected the car passes on its way upward or downward, as the case may be. As the gate is raised to its highest point and the weight falls to its lowest point, as explained, the spring-latch J wipes against the body of the bolt K, and gives way before thelatter until it has passed below it, when it is thrown outward below the bolt by its own elasticity, and constitutes a stop to prevent the ascent of the weight, thereby upholding the gate until the car is started. As the car continues its way in either direction the cam-plate L passes beyond and relieves the bolt K, and permits the latter to be pushed outward by its spring, thereby releasing the hold of the bolt upon the spring-latch J and permitting the weight of the gate to overcome the gravity of the weight E, the gate being thereby automatically lowered while the weight rises.

I claim--- 7 1. The combination, with the elevator well and car, of the gate, the weight partially equipoisin g such gate, and the spring-impelled bolt contained within the casing of the well and operating to retain the weight.

ing to, retain the weight, and a cam-plate secured to the car and operating to advance the bolt beneath the stop upon the weight.

3. In combination with the gate, the weight connected with said gate and the elastic stop or spring carried by the weight and adapted to give way before the bolt as it impinges against the latter.

4. The combination, with the elevator Well and car, of the gate, the weight connected to said gate and slidingin an inclosure ofthe Well, the spring-latch secured to said weight, the spring-pressed bolt attached within the wellcasing, and the cam carried by the car operating to force the said bolt inward, which impin ges againstthe sprin g-latch and retains said weight. substantially as and for the purposes set forth.

5. In combination with the elevatorwell cord, the gate adapted to be raised and lowered, substantially as described, a weight connected with the gate by a cord or chain passin g over suitable pulleys, aspring-impelled bolt contained within a recess of the well-casing, and the elevator-car carrying a device for art vanciug the bolt to a point to intercept a stop upon the weight.

In testimony whereof I affix my signature in presence of two witnesses.

EVERETT WEBSTER PECKER. Witnesses:

H. E. LODGE, F. CURTIS. 

